Artificial hips essentially comprise a ball and socket corresponding to the top
of the femur or thighbone and the acetabulum, the cup-shaped socket in the
hipbone. The femoral component is made of metal, sometimes with a ceramic
head, and the acetabulum is fashioned out of a tough yet slick plastic.
Cemented artificial hips use an epoxy to attach the metal to the bone,
while an uncemented prosthesis features a mesh of tiny holes into which
the patient's bone grows.
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